Home / 11,325.31-16,990.40-4,747.71

Finding the Fourth Proportional to 11,325.31, 16,990.40 and 4,747.71

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Solution

The fourth proportional to 11,325.31, 16,990.40 and 4,747.71 is: 7,122.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,325.31 : 16,990.40 = 4,747.71 : x
  2. Step 2: Convert to fraction form
    11,325.31/16,990.40 = 4,747.71/x
  3. Step 3: Cross multiply
    11,325.31x = 16,990.40 × 4,747.71
  4. Step 4: Simplify right side
    11,325.31x = 80,665,491.98
  5. Step 5: Solve for x
    x = 80,665,491.98/11,325.31
  6. Step 6: Final answer
    x = 7,122.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.